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首页> 外文期刊>Chemistry: A European journal >Design, Synthesis, and Self-Assembly Behavior of Liquid-Crystalline Bis-[60]Fullerodendrimers
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Design, Synthesis, and Self-Assembly Behavior of Liquid-Crystalline Bis-[60]Fullerodendrimers

机译：液晶双-[60]全树状聚合物的设计，合成及自组装行为

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摘要

Bis-[60]fullerodendrimers were synthesized by assembling [60]fullerene-containing typeI (terminal olefin) and typeII (,-unsaturated carbonyl olefin) olefins through the olefin cross-metathesis reaction. The synthetic modular approach developed in this study allowed the preparation of mono-[60]fullerodendrimers and their [60]fullerene-free analogues. First- and second-generation poly(aryl ester) dendrons carrying cyanobiphenyl mesogens were used as liquid-crystalline promoters. The liquid-crystalline properties were studied by polarized optical microscopy, differential scanning calorimetry, and small-angle X-ray scattering. In agreement with the nature and structure of the dendrimers, nematic, smectic, and multisegregated lamellar phases were observed. Owing to its versatility and tolerance towards many functional groups, olefin cross-metathesis proved to be a reaction of choice for the elaboration of molecular materials with complex architectures.
机译：通过使含[60]富勒烯的I型（末端烯烃）和II型（不饱和羰基烯烃）烯烃通过烯烃交叉复分解反应合成双-[60]全树状大分子。在这项研究中开发的合成模块方法允许制备单[60]富勒烯树状大分子及其不含[60]富勒烯的类似物。带有氰基联苯液晶元的第一代和第二代聚（芳基酯）树状体被用作液晶促进剂。通过偏振光学显微镜，差示扫描量热法和小角X射线散射研究了液晶性质。与树枝状聚合物的性质和结构一致，观察到向列相，近晶相和多分离的层状相。由于它的多功能性和对许多官能团的耐受性，烯烃交叉复分解被证明是精制具有复杂结构的分子材料的一种选择反应。

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